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playwright-core

Battle-tested Playwright patterns for E2E, API, component, visual, accessibility, and security testing. Covers locators, assertions, fixtures, network mocking, auth flows, debugging, and framework recipes for React, Next.js, Vue, and Angular. TypeScript and JavaScript.

skills/playwright/core/SKILL.md

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Last checked: Nov 7, 2026

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Repository stars (not skill ratings): 4,700
Repository last updated: Nov 7, 2026
License: MIT

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ai Repository topic
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ai-agent-tools Repository topic
claude Repository topic
claude-ai Repository topic
claude-api Repository topic
claude-code Repository topic
claude-code-communication Repository topic
claude-commands Repository topic
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SKILL.mdcore · 7,796 bytes
accessibility.mddoc · 54,525 bytes
angular.mddoc · 41,694 bytes
api-testing.mddoc · 52,615 bytes
assertions-and-waiting.mddoc · 27,436 bytes
auth-flows.mddoc · 33,349 bytes
authentication.mddoc · 49,862 bytes
browser-apis.mddoc · 24,555 bytes
browser-extensions.mddoc · 14,980 bytes
canvas-and-webgl.mddoc · 20,306 bytes
clock-and-time-mocking.mddoc · 19,948 bytes
common-pitfalls.mddoc · 45,467 bytes
component-testing.mddoc · 47,533 bytes
configuration.mddoc · 25,604 bytes
crud-testing.mddoc · 31,801 bytes
debugging.mddoc · 27,166 bytes
drag-and-drop.mddoc · 29,416 bytes
electron-testing.mddoc · 22,920 bytes
error-and-edge-cases.mddoc · 40,092 bytes
error-index.mddoc · 59,573 bytes
file-operations.mddoc · 26,731 bytes
file-upload-download.mddoc · 30,292 bytes
fixtures-and-hooks.mddoc · 33,733 bytes
flaky-tests.mddoc · 31,740 bytes
forms-and-validation.mddoc · 40,087 bytes
i18n-and-localization.mddoc · 24,976 bytes
iframes-and-shadow-dom.mddoc · 21,002 bytes
locator-strategy.mddoc · 20,612 bytes
locators.mddoc · 28,960 bytes
mobile-and-responsive.mddoc · 59,558 bytes
multi-context-and-popups.mddoc · 22,883 bytes
multi-user-and-collaboration.mddoc · 20,506 bytes
network-mocking.mddoc · 45,898 bytes
nextjs.mddoc · 36,980 bytes
performance-testing.mddoc · 23,537 bytes
react.mddoc · 39,517 bytes
search-and-filter.mddoc · 44,196 bytes
security-testing.mddoc · 25,787 bytes
service-workers-and-pwa.mddoc · 20,825 bytes
test-architecture.mddoc · 25,090 bytes
test-data-management.mddoc · 36,538 bytes
test-organization.mddoc · 31,279 bytes
third-party-integrations.mddoc · 31,081 bytes
visual-regression.mddoc · 36,295 bytes
vue.mddoc · 39,496 bytes
websockets-and-realtime.mddoc · 21,331 bytes
when-to-mock.mddoc · 28,648 bytes

Read excerpt


# Playwright Core Testing

> Opinionated, production-tested Playwright guidance — every pattern includes when (and when _not_) to use it.

**46 reference guides** covering the full Playwright testing surface: selectors, assertions, fixtures, network mocking, auth, visual regression, accessibility, API testing, debugging, and more — with TypeScript and JavaScript examples throughout.

## Golden Rules

1. **`getByRole()` over CSS/XPath** — resilient to markup changes, mirrors how users see the page
2. **Never `page.waitForTimeout()`** — use `expect(locator).toBeVisible()` or `page.waitForURL()`
3. **Web-first assertions** — `expect(locator)` auto-retries; `expect(await locator.textContent())` does not
4. **Isolate every test** — no shared state, no execution-order dependencies
5. **`baseURL` in config** — zero hardcoded URLs in tests
6. **Retries: `2` in CI, `0` locally** — surface flakiness where it matters